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V4L/DVB (10530): Documentation and code cleanups

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- "DealExtreme" sells the "PCear" radio and that comes from "Sanei Electric".
- MPlayer is also usable as radio application.
- Consistent usage of tabulators and blanks in the code.

Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Tobias Lorenz 2009-02-12 14:55:45 -03:00 committed by Mauro Carvalho Chehab
parent f74a61e3c6
commit 00ec8d0799
2 changed files with 14 additions and 8 deletions
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11
Documentation/video4linux/si470x.txt
View File

@ -1,6 +1,6 @@
Driver for USB radios for the Silicon Labs Si470x FM Radio Receivers
Copyright (c) 2008 Tobias Lorenz <tobias.lorenz@gmx.net>
Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net>
Information from Silicon Labs
@ -41,7 +41,7 @@ chips are known to work:
- 10c4:818a: Silicon Labs USB FM Radio Reference Design
- 06e1:a155: ADS/Tech FM Radio Receiver (formerly Instant FM Music) (RDX-155-EF)
- 1b80:d700: KWorld USB FM Radio SnapMusic Mobile 700 (FM700)
- 10c5:819a: DealExtreme USB Radio
- 10c5:819a: Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear)
Software
@ -52,6 +52,7 @@ Testing is usually done with most application under Debian/testing:
- gradio - GTK FM radio tuner
- kradio - Comfortable Radio Application for KDE
- radio - ncurses-based radio application
- mplayer - The Ultimate Movie Player For Linux
There is also a library libv4l, which can be used. It's going to have a function
for frequency seeking, either by using hardware functionality as in radio-si470x
@ -69,7 +70,7 @@ Audio Listing
USB Audio is provided by the ALSA snd_usb_audio module. It is recommended to
also select SND_USB_AUDIO, as this is required to get sound from the radio. For
listing you have to redirect the sound, for example using one of the following
commands.
commands. Please adjust the audio devices to your needs (/dev/dsp* and hw:x,x).
If you just want to test audio (very poor quality):
cat /dev/dsp1 > /dev/dsp
@ -80,6 +81,10 @@ sox -2 --endian little -r 96000 -t oss /dev/dsp1 -t oss /dev/dsp
If you use arts try:
arecord -D hw:1,0 -r96000 -c2 -f S16_LE | artsdsp aplay -B -
If you use mplayer try:
mplayer -radio adevice=hw=1.0:arate=96000 \
-rawaudio rate=96000 \
radio://<frequency>/capture
Module Parameters
=================

11
drivers/media/radio/radio-si470x.c
View File

@ -5,8 +5,9 @@
* - Silicon Labs USB FM Radio Reference Design
* - ADS/Tech FM Radio Receiver (formerly Instant FM Music) (RDX-155-EF)
* - KWorld USB FM Radio SnapMusic Mobile 700 (FM700)
* - Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear)
*
* Copyright (c) 2008 Tobias Lorenz <tobias.lorenz@gmx.net>
* Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -29,7 +30,7 @@
* 2008-01-12 Tobias Lorenz <tobias.lorenz@gmx.net>
* Version 1.0.0
* - First working version
* 2008-01-13 Tobias Lorenz <tobias.lorenz@gmx.net>
* 2008-01-13 Tobias Lorenz <tobias.lorenz@gmx.net>
* Version 1.0.1
* - Improved error handling, every function now returns errno
* - Improved multi user access (start/mute/stop)
@ -145,7 +146,7 @@ static struct usb_device_id si470x_usb_driver_id_table[] = {
{ USB_DEVICE_AND_INTERFACE_INFO(0x06e1, 0xa155, USB_CLASS_HID, 0, 0) },
/* KWorld USB FM Radio SnapMusic Mobile 700 (FM700) */
{ USB_DEVICE_AND_INTERFACE_INFO(0x1b80, 0xd700, USB_CLASS_HID, 0, 0) },
/* DealExtreme USB Radio */
/* Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear) */
{ USB_DEVICE_AND_INTERFACE_INFO(0x10c5, 0x819a, USB_CLASS_HID, 0, 0) },
/* Terminating entry */
{ }
@ -345,7 +346,7 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*");
/* Report 19: stream */
#define STREAM_REPORT_SIZE 3
#define STREAM_REPORT 19
#define STREAM_REPORT 19
/* Report 20: scratch */
#define SCRATCH_PAGE_SIZE 63
@ -414,7 +415,7 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*");
/* bootloader commands */
#define GET_SW_VERSION_COMMAND 0x00
#define SET_PAGE_COMMAND 0x01
#define SET_PAGE_COMMAND 0x01
#define ERASE_PAGE_COMMAND 0x02
#define WRITE_PAGE_COMMAND 0x03
#define CRC_ON_PAGE_COMMAND 0x04